摘要
研究了杂交稻汕优63及其三系生育过程中叶片RuBP羧化酶/加氧酶及有关光合酶活性的变化,结果表明,供试材料RuBP羧化酶/加氧酶等参数的变化无本质的差异。杂交稻不同叶位叶片的RuBP羧化酶活性低于其母本不育系,但与父本较接近。从RuBP羧化酶/加酶氧这一光合特征值来分析,杂交稻叶片并不存在光合优势。 随着叶龄增加,杂交稻及其三系叶片的RuBP羧化酶/加氧酶、乙醇酸氧化酶、过氧化氢酶活性下降,而酸性磷酸酯酶活性上升,可溶性蛋白质和叶绿素含量下降。各供试材料叶片衰老的进程不同,杂交稻及其恢复系、保持系衰老较早,而不育系衰老较迟。不育系叶片不易早衰的性状并未遗传给杂交后代。
Ribulose 1, 5-disphosphate carboxylase/oxygenase (Rubisco), glycolate oxi-dase, catalase and acid phosphatase activities and chlorophyll and soluble protein content, were investigated at developmental stages in hybrid rice (shanyou 63) and its three lines. The results showed that RuBP carboxylase/ oxygenase activities of hybrid rice were lower than that of its parents on the different leaf position, and was close to its father. Therefore, hybrid rice hadn't significant photosynthetic superiority from Rubisco activity.With the leaves ageing of hybrid rice and three lines, activities of Rubisco, glycolate oxidase and catalase decreased, however, acid phosphatase increased, and soluble protein and chlorophyll contents declined. But senescence courses of hybrid rice and three lines were different. Male ster-iles line senescenced later than hybrid rice, restorers line, maintainers line. It was worthy to be discussed how to make the characteristic of late ageing of male steriles line could be inherited by hybrid rice.
出处
《作物学报》
CAS
CSCD
北大核心
1996年第1期6-12,共7页
Acta Agronomica Sinica
基金
江苏省自然科学基金资助项目
